(see Publications under the Works tab)

I specialize in studies of diversity and function of soil and plant-associated microbial communities and their contributions to plant growth. Research has identified agricultural practices, such as adoption of no-till, cover crops and diversified rotations, among others, as tools to promote build-up and maintenance of healthy soils and plants. That management practices affect structure and diversity of plant-associated and soil microbial communities has been widely documented; however, we are still trying to understand how to best incorporate measures of microbial diversity, activity and function to guide choice of agricultural management practices. Furthermore, specific aspects of the ecology of plant-microbe interactions, as it affects plant health, remain to be understood. My research program focuses on questions related to a) land management practices effects on plant-associated microbial community dynamics; b) endophythic microbiome establishment and factors affecting endophytic microbiome composition; and c) relationships between plant microbiome diversity and dynamics and plant disease incidence. In addition, I aim to understand how these complex interactions can contribute to the success and estability of microbial inoculants in field settings. To answer these questions, I use classic microbiology and plant pathology techniques, including high throughput next-generation sequencing for microbial community evaluations; greenhouse and field experiments to assess plant health; and computational analysis required for integrating microbial community, soil and plant health data. 

Currently, I am focused on diversified cropping systems, in particular extended rotation sequences (3-4 years) and cover crops within corn and soybean cropping systems. In 2018 the acres planted to corn and soybean in Ohio totaled 8.5 million acres.  Hence understanding the relationship between cropping practices, soil and plant health, and the microbiome is of great relevance to the state. Furthermore, I have established collaborations with other faculty and industry partners to explore aspects of beneficial fungi - plant host interactions, with current focus on soybean and tomato as model systems. Finally, in collaboration with researchers at Oklahoma State University and Universidad de las Fuerzas Armadas ESPE, we are studying aspects of suppressive soils in potato cropping systems in Ecuador. 

Lab members

Fall 2018: Ranjana Rawal (Horticulture and Crop Sciences, PhD Student); Leslie Taylor (lab manager); Daowen Huo (Plant Pathology, MSc student); Wattanaporn Teerasan (Mai, Visiting Scholar); Ana M. Vazquez-Catoni (Plant Pathology, MSc student)

Editorial activities

Associate Editor, Phytobiomes, APS Journals

Research and Teaching Experience

The Ohio State University – Ohio Agricultural Research and Development Center, Department of Plant Pathology, Assistant Professor in Phytobacteriology August 2017 – to date

North Central Agricultural Research Laboratory (Brookings, South Dakota), Agricultural Research Services, United States Department of Agriculture; Research Biologist / Postdoctoral research associate December 2014 – July 2017

Oklahoma State University, Department of Entomology and Plant Pathology, Visiting Research Scholar February 2014 – December 2014

Duke University, Nicholas School of the Environment, Postdoctoral associate June 2011 – January 2014

ŸUniversidad de las Fuerzas Armadas (ESPE), Life Sciences Department, Assistant Professor of Microbiology October 2008 – June 2011

ŸThe Ohio State University, Department of Plant Pathology, Graduate Research Associate  September 2004 – August 2008

ŸPontificia Universidad Católica del Ecuador, Life Sciences Department. Assistant Professor. September 2002 – July 2004